To determine how many moles of cyclohexanol are needed to produce 5 g of cyclohexene, we first need to understand the chemical reaction involved. Cyclohexanol can be dehydrated to produce cyclohexene through an elimination reaction. The balanced chemical equation for the dehydration of cyclohexanol (C6H12O) is:
C6H12O → C6H10 + H2O
This shows that one mole of cyclohexanol produces one mole of cyclohexene. Next, we calculate the number of moles of cyclohexene produced from 5 g:
The molar mass of cyclohexene (C6H10) is approximately 82.15 g/mol. Using this, we find the number of moles:
Number of moles = mass (g) / molar mass (g/mol) = 5 g / 82.15 g/mol ≈ 0.061 moles
Since the reaction indicates that 1 mole of cyclohexanol produces 1 mole of cyclohexene, we find that approximately 0.061 moles of cyclohexanol are needed to produce 5 g of cyclohexene. Thus, the answer is:
0.061 moles of cyclohexanol